silicone use restriction in automotive industries?
silicone use restriction in automotive industries?
(OP)
Hi everybody,
We have a client who developed a protection device made from soft hypoallergenic material mainly from silicone.
The question is if somebody known some things about restriction for the use of silicone content devices in the automotive industries.
All opinions will be very appreciates.
Best regards,
Gelu
We have a client who developed a protection device made from soft hypoallergenic material mainly from silicone.
The question is if somebody known some things about restriction for the use of silicone content devices in the automotive industries.
All opinions will be very appreciates.
Best regards,
Gelu





RE: silicone use restriction in automotive industries?
RE: silicone use restriction in automotive industries?
I have heard that silicone can cause problems if it comes into proximity of paint plants, leading to a painting defect sometimes referred to in slang as 'fish eyes'.
not sure if this helps !!
sean
RE: silicone use restriction in automotive industries?
RE: silicone use restriction in automotive industries?
Having said this, many forms of silicone are non reactive to painted surfaces, and are OK to be used.
If your client's product is to be fitted in trim, it is potentially OK to be used.
Most OE's will require a paint compatibility test to be done on the material - probably both the encapsulating material and the inner material to ensure that any risks are known.
Your first step would be to check this compatibility, and also perhaps the impact on for example glass bonding adhesives.
RE: silicone use restriction in automotive industries?
In general, there are a few bad low-molecular and very fluid silicone oils which have the tendency over spreading all over the place and contaminating production halls from floor to ceiling. They can disrupt the adhesion of paints, glues or even cause foams to shrink. This is what has made many car manufacturers particularly careful.
But in spite of their undeserved bad reputation, silicones are widely used in the automobile industry - most cars have a few pounds of silicone altogether. The important thing is to make sure that you use a compound with no monomers or volatile components and that your polymer is not reversible, such as LSRs and RTVs (no moisture-cure products!).
Good Luck!
Giacaglia